Financial Instruments (Schedule of the Fair Value of Assets and Liabilities Related to Derivatives Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Derivatives, Fair Value [Line Items]
Total assets	$ 64	$ 5
Total liabilities	11	81
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Currency Contracts | Prepaid Expenses and Other
Derivatives, Fair Value [Line Items]
Total assets	6	3
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Currency Contracts | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	2	3
Designated as Hedging Instrument | Cash Flow Hedging | Commodity Contracts | Prepaid Expenses and Other
Derivatives, Fair Value [Line Items]
Total assets	0	2
Designated as Hedging Instrument | Cash Flow Hedging | Commodity Contracts | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	3	0
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swaps | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total assets	46	0
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swaps | Deferred Income Taxes and Other Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	6	78
Designated as Hedging Instrument | Fair Value Hedging | Cross Currency Interest Rate Contract [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total assets	$ 12	$ 0